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Loans - Risk by loan portfolio (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | $ 2,106,559
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Total Loans | $ 2,167,367 | $ 2,167,367 |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |
Total loans | 1,125 |  |
SBA 504 loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 35,077
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Total Loans | 31,657 | 31,657 |
SBA loans held for investment |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 38,468
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 979 | 979 |
2022 | 8,700 | 8,700 |
2021 | 7,369 | 7,369 |
2020 | 6,949 | 6,949 |
2019 | 2,704 | 2,704 |
2018 and Earlier | 13,177 | 13,177 |
Total Loans | 39,878 | 39,878 |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |
2019 |  | 113 |
Total loans |  | 113 |
SBA and commercial loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 1,231,919
SBA PPP loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 5,908
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2021 | 2,555 | 2,555 |
Total Loans | 2,555 | 2,555 |
Commercial loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 1,187,543
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 84,290 | 84,290 |
2022 | 345,584 | 345,584 |
2021 | 187,828 | 187,828 |
2020 | 138,307 | 138,307 |
2019 | 105,599 | 105,599 |
2018 and Earlier | 300,717 | 300,717 |
Revolving Loans Amortized Cost Basis | 93,707 | 93,707 |
Total Loans | 1,256,032 | 1,256,032 |
Commercial loans | SBA 504 loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 35,077
Commercial loans | Commercial real estate |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 903,126
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Total Loans | 931,756 | 931,756 |
Commercial loans | Commercial real estate construction |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 131,774
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Total Loans | 161,882 | 161,882 |
Commercial loans | Consumer other |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 117,566
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Total Loans | 130,737 | 130,737 |
Residential mortgage loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 605,091
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 71,216 | 71,216 |
2022 | 268,961 | 268,961 |
2021 | 79,593 | 79,593 |
2020 | 55,652 | 55,652 |
2019 | 34,570 | 34,570 |
2018 and Earlier | 123,422 | 123,422 |
Total Loans | 633,414 | 633,414 |
Consumer loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 78,164
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 1,562 | 1,562 |
2022 | 5,438 | 5,438 |
2021 | 5,650 | 5,650 |
2020 | 724 | 724 |
2019 | 3,399 | 3,399 |
2018 and Earlier | 8,321 | 8,321 |
Revolving Loans Amortized Cost Basis | 50,896 | 50,896 |
Total Loans | 75,990 | 75,990 |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |
2021 |  | 345 |
Total loans | 225 | 345 |
Consumer loans | Home equity |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 68,310
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Total Loans | 68,379 | 68,379 |
Consumer loans | Consumer other |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 9,854
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Total Loans | 7,611 | 7,611 |
Residential construction loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 163,457
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 13,093 | 13,093 |
2022 | 76,151 | 76,151 |
2021 | 37,867 | 37,867 |
2020 | 7,751 | 7,751 |
2019 | 500 | 500 |
2018 and Earlier | 3,027 | 3,027 |
Revolving Loans Amortized Cost Basis | 1,035 | 1,035 |
Total Loans | 139,424 | 139,424 |
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract] |  |  |
2018 and Earlier |  | 500 |
Revolving Loans Amortized Cost Basis |  | 400 |
Total loans | 900 | 900 |
Total |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 2,078,631
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 171,140 | 171,140 |
2022 | 704,834 | 704,834 |
2021 | 320,862 | 320,862 |
2020 | 209,383 | 209,383 |
2019 | 146,772 | 146,772 |
2018 and Earlier | 448,664 | 448,664 |
Revolving Loans Amortized Cost Basis | 145,638 | 145,638 |
Total Loans | 2,147,293 | 2,147,293 |
Residential mortgage, consumer and residential construction loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 846,712
Performing | Residential mortgage loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 601,730
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 69,505 | 69,505 |
2022 | 266,630 | 266,630 |
2021 | 77,180 | 77,180 |
2020 | 54,857 | 54,857 |
2019 | 34,294 | 34,294 |
2018 and Earlier | 122,341 | 122,341 |
Total Loans | 624,807 | 624,807 |
Performing | Consumer loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 78,164
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 1,562 | 1,562 |
2022 | 5,438 | 5,438 |
2021 | 5,650 | 5,650 |
2020 | 724 | 724 |
2019 | 3,399 | 3,399 |
2018 and Earlier | 8,321 | 8,321 |
Revolving Loans Amortized Cost Basis | 50,626 | 50,626 |
Total Loans | 75,720 | 75,720 |
Performing | Consumer loans | Home equity |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 68,310
Performing | Consumer loans | Consumer other |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 9,854
Performing | Residential construction loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 160,025
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 13,093 | 13,093 |
2022 | 76,151 | 76,151 |
2021 | 37,515 | 37,515 |
2020 | 7,751 | 7,751 |
2019 | 500 | 500 |
2018 and Earlier | 1,232 | 1,232 |
Total Loans | 136,242 | 136,242 |
Performing | Residential mortgage, consumer and residential construction loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 839,919
Nonperforming | Residential mortgage loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 3,361
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 1,711 | 1,711 |
2022 | 2,331 | 2,331 |
2021 | 2,413 | 2,413 |
2020 | 795 | 795 |
2019 | 276 | 276 |
2018 and Earlier | 1,081 | 1,081 |
Total Loans | 8,607 | 8,607 |
Nonperforming | Consumer loans |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
Revolving Loans Amortized Cost Basis | 270 | 270 |
Total Loans | 270 | 270 |
Nonperforming | Residential construction loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 3,432
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2021 | 352 | 352 |
2018 and Earlier | 1,795 | 1,795 |
Revolving Loans Amortized Cost Basis | 1,035 | 1,035 |
Total Loans | 3,182 | 3,182 |
Nonperforming | Residential mortgage, consumer and residential construction loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 6,793
Pass | SBA loans held for investment |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 37,163
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 979 | 979 |
2022 | 7,339 | 7,339 |
2021 | 5,132 | 5,132 |
2020 | 6,247 | 6,247 |
2019 | 2,704 | 2,704 |
2018 and Earlier | 11,627 | 11,627 |
Total Loans | 34,028 | 34,028 |
Pass | SBA and commercial loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 1,214,139
Pass | SBA PPP loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 5,908
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2021 | 2,555 | 2,555 |
Total Loans | 2,555 | 2,555 |
Pass | Commercial loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 1,171,068
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2023 | 84,290 | 84,290 |
2022 | 345,498 | 345,498 |
2021 | 185,728 | 185,728 |
2020 | 138,087 | 138,087 |
2019 | 103,348 | 103,348 |
2018 and Earlier | 286,754 | 286,754 |
Revolving Loans Amortized Cost Basis | 93,312 | 93,312 |
Total Loans | 1,237,017 | 1,237,017 |
Pass | Commercial loans | SBA 504 loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 35,077
Pass | Commercial loans | Commercial real estate |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 894,110
Pass | Commercial loans | Commercial real estate construction |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 131,774
Pass | Commercial loans | Consumer other |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 110,107
Special mention | SBA loans held for investment |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 558
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2020 | 702 | 702 |
2018 and Earlier | 758 | 758 |
Total Loans | 1,460 | 1,460 |
Special mention | SBA and commercial loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 13,006
Special mention | Commercial loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 12,448
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2022 | 86 | 86 |
2021 | 2,100 | 2,100 |
2019 | 2,251 | 2,251 |
2018 and Earlier | 11,386 | 11,386 |
Revolving Loans Amortized Cost Basis | 395 | 395 |
Total Loans | 16,218 | 16,218 |
Special mention | Commercial loans | Commercial real estate |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 6,228
Special mention | Commercial loans | Consumer other |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 6,220
Substandard | SBA loans held for investment |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 747
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2022 | 1,361 | 1,361 |
2021 | 2,237 | 2,237 |
2018 and Earlier | 792 | 792 |
Total Loans | 4,390 | 4,390 |
Substandard | SBA and commercial loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 4,774
Substandard | Commercial loans |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 4,027
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract] |  |  |
2020 | 220 | 220 |
2018 and Earlier | 2,577 | 2,577 |
Total Loans | $ 2,797 | $ 2,797 |
Substandard | Commercial loans | Commercial real estate |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | 2,788
Substandard | Commercial loans | Consumer other |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total loans |  |  | $ 1,239

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